RT-AC5300 issues when using Wireless Scheduler

I'm using the wireless scheduler to automatically switch off wlan during night.

The scheduler prinzipially works well, but
two times now I had a problem to connect to the wireless network again as long i didn't
switch of and on the router.

- three days ago Amazon's FireTV couldn't connect anymore
- today my Lenovo notebook couldn't connect using the 5G-2 channel

Firmware is 1355

For me, it looks like the problem comes because wlan was switched off during night and
just wlan gets switched...

RT-AC5300 issues when using Wireless Scheduler